Preparation device of environment-friendly recycled concrete

The utility model relates to the technical field of concrete preparation, in particular to a preparation device of environment-friendly recycled concrete. Comprising a detachable box body, a feeding port is formed in the top of the box body, a discharging port is formed in one side of the box body, a conveying belt is arranged on the lower portion in the box body, a feeding device and a crushing device are arranged in the box body, and the feeding device and the crushing device are driven through a driving assembly; the crushing device comprises a detachable crushing wheel assembly, and the crushing wheel assembly is horizontally and rotatably mounted in the box body; the feeding device and the crushing device are arranged in the box body, the feeding device can convey large concrete blocks into the crushing device to be crushed, small concrete blocks can be discharged from the discharging port through the conveying belt, the crushing device can crush the concrete blocks, and the concrete blocks can be crushe